| Siggiewi to Marco de Canavezes | 1,271.22 mi (2,045.82 km) |
| Siggiewi to Marinha Grande | 1,300.05 mi (2,092.22 km) |
| Siggiewi to Massama | 1,314.77 mi (2,115.92 km) |
| Siggiewi to Matosinhos | 1,299.45 mi (2,091.26 km) |
| Siggiewi to Mealhada | 1,278.93 mi (2,058.24 km) |
| Siggiewi to Melgaco | 1,289.20 mi (2,074.76 km) |
| Siggiewi to Melres | 1,282.78 mi (2,064.43 km) |
| Siggiewi to Mira | 1,294.14 mi (2,082.71 km) |
| Siggiewi to Miranda do Corvo | 1,270.62 mi (2,044.86 km) |
| Siggiewi to Mirandela | 1,225.59 mi (1,972.40 km) |
| Siggiewi to Mogadouro | 1,199.89 mi (1,931.04 km) |
| Siggiewi to Moimenta da Beira | 1,241.35 mi (1,997.76 km) |
| Siggiewi to Moita | 1,298.89 mi (2,090.36 km) |
| Siggiewi to Moncao | 1,299.28 mi (2,090.99 km) |
| Siggiewi to Montalegre | 1,261.13 mi (2,029.60 km) |
